Patents Assigned to E
  • Breakwater
    Patent number: 5102257
    Abstract: A modular artificial reef effective to prevent shoreline erosion is constructed of reef-forming modules placed in side-by-side relation and coupled together to prevent relative movement therebetween. The modules, preferably having a triangular prismatic shape, include a gently sloping seaward face, a beachward face and a base which rests on the sea bottom. The modules are configured to deflect currents, approaching from the sea, away from the beachward face. This configuration prevents currents from flowing at high velocity along the beachward face and toward the beachward toe. Accordingly, scouring of the seabed adjacent to the beachward toe of the artificial reef is minimized or eliminated.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: April 7, 1992
    Assignee: Richard E. Creter
    Inventor: Richard E. Creter
  • Stabilized chlorinated resin latex
    Patent number: 5102946
    Abstract: A stabilized chlorinated resin latex comprising a mixture in water of A) 50-95 wt. %, based on the weight of A and B, of a chlorinated resin, substantially free of acid moieties, having a chlorine content of 15-70 wt. %, and B) 5-50 wt. %, based on the weight of A and B, of a salt of a water-insoluble C.sub.2 -C.sub.12 alpha, beta- unsaturated olefin copolymer which contains at least 2 mole % acid moieties and is compatible with the chlorinated resin.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: April 7, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John C. Chen, Royce E. Ennis
  • Process for preparing 3-alkenylidene-1,1-bisphosphonates
    Patent number: 5103036
    Abstract: A process is provided for preparing a 3-alkenylidene-1,1-bisphosphonate which is an intermediate for preparing an inhibitor of the enzyme squalene synthetase which is useful as an inhibitor of cholesterol biosynthesis, or which bisphosphonate itself is useful as an inhibitor of cholesterol biosynthesis. The process involves the palladium catalyzed coupling of an allylic ester with a tetraester of a methylenebisphosphonate to form a 3-alkenylidene-1,1-bisphosphonate containing an alkene moiety located .gamma., .delta. to the phosphonates.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: April 7, 1992
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: David R. Magnin, Richard B. Sulsky
  • Photographic film with improved speed to fog ratio
    Patent number: 5102782
    Abstract: Photographic, gelatino, silver halide emulsions exhibiting improved speed/fog ratio and good hardening are described. These emulsions are made by sensitizing with 1-naphthol-4-sulfonic acid and by adding an aliphatic polyol thereto.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: April 7, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Raymond J. LeStrange
  • Solvent blockers and multilayer barrier coatings for thin films
    Patent number: 5102699
    Abstract: A film comprising alternating layers of polyvinylidene chloride resin and a solvent barrier such as polyvinyl alcohol provides superior barrier properties. Barrier and mechanical properties are enhanced when formulation additives are present at customary levels only in the outermost layers.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: April 7, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Charles L. Beeson, Raymond T. Cole, Gedeon I. Deak, Harbeson H. Leidolf, Jr.
  • Method of and device for moving image contour recognition
    Patent number: 5103488
    Abstract: The recognition method is applied to visual telephony image coding. Matrices of digital samples relevant to the individual frames of the video transmission are submitted to a first processing whereby the foreground region containing the figure is identified. The information concerning the elements of such a region is then processed by edge recognition algorithms to detect a group of elements possibly belonging to the contour. The group of elements is analyzed to select a sequence of elements distributed on the average along a line. The sequency of elements is processed by a neural network to build up the continuous contour which is then coded.
    Type: Grant
    Filed: June 7, 1990
    Date of Patent: April 7, 1992
    Assignee: CSELT Centro Studi e Laboratori Telecommunicazioni SpA
    Inventors: Roberto Gemello, Cataldo Lettera, Lorenzo Masera
  • Treatment of glaucoma and ocular hypertension with pyrazole, pyrrole and triazole angiotensin-II receptor antagonists
    Patent number: 5102903
    Abstract: Substituted pyrazole, pyrrole and triazole angiotension-II receptor antagonists and pharmaceutically acceptable salts thereof are useful for treating glaucoma and ocular hypertension.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: April 7, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ronald D. Smith
  • Base resistant fluoroelastomers with improved processibility and curability
    Patent number: 5102965
    Abstract: Base-resistant peroxide-curable fluoroelastomers with improved processibility comprising a polymeric chain having tetrafluroethylene as one comonomer copolymerized with monomer units selected from the group (a) propylene, (b) propylene and vinylidene fluoride and (c) a C.sub.2-3 hydrocarbon olefin and one or more perfluoro(alkyl vinyl ethers); said polymer chains having terminal iodo-groups.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: April 7, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Dana P. Carlson
  • Refrigerant recycling system
    Patent number: 5100562
    Abstract: A highly efficient refrigerant purification device for removing moisture, oil, particulates, non-condensible impurities and other contaminants from a refrigerant, thereby allowing maximum recovery of the refrigerant in a refrigeration system, the refrigerant being in full compliance with regulatory standards. The device can be easily adapted to purify a wide variety of refrigerants, and the device is organized in a logical arrangement which utilizes a minimum number of parts.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: March 31, 1992
    Assignee: M/E Automotive Corporation
    Inventor: Robert H. Proctor
  • Flexible polyurethane foam having reduced discoloration due to scorch during manufacture
    Patent number: 5100925
    Abstract: The present invention relates to a method of producing flexible polyurethane foam having reduced discoloration which utilizes low molecular weight alkanes or mixtures thereof as auxiliary blowing agents. More particularly, the present invention relates to the use of auxiliary blowing agents which are linear or branched alkanes having boiling points above -50.degree. C. and below 100.degree. C.
    Type: Grant
    Filed: March 7, 1991
    Date of Patent: March 31, 1992
    Assignee: E. R. Carpenter Company, Inc.
    Inventors: Stuart L. Watson, Jr., Joseph R. Graham, Jr., David L. Haley, Myron H. Reinhart
  • 7-oxabicycloheptyl substituted heterocyclic amide or ester prostaglandin analogs useful in the treatment of thrombotic and vasospastic disease
    Patent number: 5100889
    Abstract: 7-Oxabicycloheptane substituted prostaglandin analogs useful in treating thrombotic and vasopastic disease have the structural formula ##STR1## wherein m is 1, 2 or 3; n is 1, 2, 3 or 4; Z is --(CH.sub.2).sub.2 --, --CH.dbd.CH-- or ##STR2## wherein Y is O, a single bond or vinyl, with the proviso that when n is 0, if Z is ##STR3## then Y cannot be O, and Z is --CH.dbd.CH--, n is 1, 2, 3 or 4; and when Y=vinyl, n=0; R is CO.sub.2 H, CO.sub.2 lower alkyl, CH.sub.2 OH, CO.sub.2 alkali metal, CONHSOR.sup.3, CONHR.sup.3a or --CH.sub.2 --5-tetrazolyl, X is O, S or NH; and where R.sup.1, R.sup.2, R.sup.3 and R.sup.3a are as defined herein.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: March 31, 1992
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Raj N. Misra, Philip M. Sher, Philip D. Stein, Steven E. Hall, David Floyd, Joel C. Barrish
  • Fluorocarbon compounds and processes for preparation thereof
    Patent number: 5101058
    Abstract: Novel fluorinated (poly)sulfates, halosulfonates, halohydrins and expoxides, as well as novel processes for producing them are disclosed.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: March 31, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Carl G. Krespan
  • Thick film container
    Patent number: 5099998
    Abstract: A container comprising an inner container, inner lid, outer container and outer lid which is suitable for commercial transport and legible display of required label information, and can be readily grasped and handled such that the lid and contents can be safely and completely removed. The invention further relates to a plurality of such containers, each container having a different maximum capacity but a label area of at least the same size as the label area of the smallest container and the same distance from the bottom of the container such that application of the labels to the containers can be performed by automated means. These containers are useful, in particular, for storing and transporting hazardous materials such as thick film paste materials.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: March 31, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Roy Curzon, Paul T. Harrigan, Jr., David A. White, James J. Magee
  • Process for preparing superconductive fibers of high density
    Patent number: 5100864
    Abstract: Process for preparing superconductive fiber from a dispersion of a particulate precursor of a superconductive oxide in a solution of an organic polymer in an organic solvent. The process includes the steps of forming a spinnable dispersion of the precursor in the solution, extruding the dispersion into fiber, and firing the fiber at a temperature of at least 950.degree. C. to form superconductive fiber.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: March 31, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Che-Hsiung Hsu
  • Swing element valve
    Patent number: 5099877
    Abstract: A closure element for use in circular ducts for controlling the flow of material in the duct. The element has a unique unitary shape which allows installation within the confines of the duct with minimum distortion of the duct cross-section when the valve is open. This results in a very low pressure drop through the valve. Because the closure element geometry is such that the element pivots from the duct wall solely within the confines of the duct, the valve is well suited as a check valve.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: March 31, 1992
    Assignee: E-Systems, Inc.
    Inventor: Kyle G. Fluegel
  • Cementitious hazardous waste containers and their method of manufacture
    Patent number: 5100586
    Abstract: Novel cementitious containers for storage of hazardous waste are disclosed having an inner layer of substantially unhydrated cement in contact with the hazardous waste and an outer layer of hydrated cement. Cementitious hazardous waste containers may be prepared by compressing powdered hydraulic cement around solid hazardous waste materials and then hydrating an outer layer of the powdered hydraulic cement. An inner layer of powdered hydraulic cement remains unhydrated and capable of reacting with any water which might breach the outer layer or originate with the hazardous waste itself. The inner layer of powdered hydraulic cement is also capable of reacting with any carbon dioxide or carbon monoxide generated by decomposition of organic waste materials.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: March 31, 1992
    Assignee: E. Khashoggi Industries
    Inventors: Hamlin M. Jennings, Simon K. Hodson
  • Binary azeotropic compositions of polyfluoropentanes and methanol
    Patent number: 5100572
    Abstract: An azeotropic mixture of polyfluoropentanes and methanol is disclosed. The azeotropic mixture is useful as: a cleaning agent, a blowing agent, a refrigerant, an aerosol propellant, a heat transfer medium and a power cycle working fluid.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: March 31, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Abid N. Merchant
  • Polyester from 9,9-bis(perfluoroalkyl)xanthene diol or 9-aryl-9-perfluoroalkylxanthene diol
    Patent number: 5101004
    Abstract: Disclosed are rigid fluorinated monomers, their preparation, and polymers derived therefrom based on two novel tricyclic xanthene core systems, 9,9-bis(perfluoroalkyl)xanthene (I) and 9-phenyl-9-perfluoroalkylxanthene (II). The monomers have utility in the preparation of advanced high-performance polymers, particularly polyimides.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: March 31, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Swiatoslaw Trofimenko
  • Process for purifying lead using calcium/sodium filter cake
    Patent number: 5100466
    Abstract: A method for processing crude lead bullion using a reactive metal mixture intermediate by-product having sodium and calcium includes the steps of pouring molten crude lead bullion from a blast furnace into a casting vessel, cooling the crude lead bullion so that a crust forms on top thereof, punching a hole in the crust, injecting a reactive metal mixture intermediate by-product comprising sodium and calcium below the crust and into the crude lead bullion, and allowing the contents of the casting vessel to cool to form three equilibrium phases, including a bottom phase of refined lead bulletin, a speiss phase formed on top of the lead bullion phase and including Cu.sub.3 As and Fe.sub.2 As, and a matte phase formed on top of the speiss phase and including copper, sodium, calcium and sulfur.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: March 31, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Michael H. Blenk
  • Method and apparatus for providing a cable assembly seal and strain relief
    Patent number: 5100347
    Abstract: This invention relates to a method and apparatus for providing a cable assembly seal and strain relief and, in particular, where the apparatus comprises a pre-mold for use with an overmold to provide the seal and strain relief for electrical conductors terminated within an electrical housing.
    Type: Grant
    Filed: May 3, 1989
    Date of Patent: March 31, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Joseph J. Malasky, III, David A. Smith